Timing mechanism for glass feeders



June 3, 1930.

o. TUCKER ET AL TIMiENG MECHANISM FOR GLASS FEEDERS Filed June :50, 19205. Sheets-Sheet 1 Quorum;

June 3, 1930.

o. M. TUCKER ET AL TIMING MECHANISM FOR GLASS FEEDERS Filed June 50,1920 5 Sheets-Sheet 2 vJune 3, 1930. o, TUCKER El AL TIMING MECHANISMFor? GLASS FEEDERS Filed June 30 1920 5 Sheets-Sheet FIG 5 H ZW attain;

June 3', 1930. o; M. TLIICKEIR ET AL 1,760,999

TIMING MECHANISM FOR- G LASS FEEDERS Filed June 30 1920 e 5 Q 6 m e f;

( g m s; I k W mu I, um i v 6 w 0 0 ZVVENIOIR. M m. W

A TTORNEY.

Patented June 3, o i

UNITED] srArEsrArENT. OFFICE or-Ivnr. isobar: Amirm'r nuiwisjorconuunus,enrol AS- SIGNOBS, BY MESNE"ASSIGNMENTS, .lO. HABTI'OBDJEMPIRE COMPANY,OF EART- FORD, CONNECTICUT, GORPO RA-TION'OI' DELAWARE v ammo mncn'amsuroa Grass ran-Dans Application filed June 89, -1920, Seria1 No. 892,918.Beneuied February 21,. 1827,.

Our invention relates to timing mecha-' I 'nism for glass feeders andhas particular ref erence to the provision of an automatically operatingapparatus which is regulable to take care of practically all conditionswhich occur or are likelyto occur in the feeding of viscous glass. Itrelates particularly to that type of device wherein the various parts ofthe glass-feeding device-are operable by air underpressureand-contemplates the pr0- vision of automatic means for regulating theapplication of such air underlpressure to cylinder and piston elementswh ch contr'ol'and 4 operatethe various elements, of the feeding deviceThe present dev1ce 1s an improvement 1 upon the .tlmmg mechanism shownand described in our application filed September 16,1916, Serial No.120,429. The cylinders and pistons designed to be actuated under controlof the timing mechanism shown here.-

' in are the same in principle as the cylinders and pistons which areshown in conjunction with the timing mechansm in theabove-mentionedapplication, although the type of shear-actuatilf'cylinder and piston con struction whic is shown in an executed on June26, 1920, and ed in the i Patent'Oflice immediately thereafter is thepreferred type of sheer-actuating mechanism that we use in conjunctionwith the present form of timin mechanism. It be understood that t istiming mechanism may be utilized with various forms of feeding de-;vices, however. a

By referring to application Serial No.

7 120,429 .it will be seen that the pistons which actuate the severalmovable units or elements ofour feeder are difierential. area. pistonsand that constantair pressure is applied to one area of each 'piston tomaintain the par-.

ticular-element in a given position while air.

Y move, h sures causing 4 I p I D at proper times. These ropertlmes are.de

pressure is intermittently applied to-a larger area'of each piston so asto overcome the con stant pressure air and cause the piston to theseconstant and intermittent prestermined and controlled v y the timeiidrthe reason that the gpplication actuation of the difierent units tor ofthemachin'e could by rotating them or any one offthem cause them to getout ofproper timing relation. In' the present timing mechanism with thereciprocable valves{ 1 the manual adjustment can only be eifectetemporarily by an. operator because if the operating valves are manuallymanipulated so as to'produce an improper timing, this will automaticallybe corrected upon the continued'o eration of the timingmechanismi A furter important advantage of the pres- .ent timing mechanism is that meansare rovided for varying the time of starting 0 the press with relationto the time of drop of the charges. Thus, with some charges; it is Vdesirable to allow theglass'to remain in the mold for a longer period oftime than it is with others. We have provided a means for regulating thetime of trip-ofi of the press 'during the continued operation of themachine and without the necessity for stoppingv any part'thereof.

We have also provided a novel form v of air lock which" operates toositively hold the valves raised after they ave once been.

raised, regardless of whether the machine continues to operate or not,untilthe con:

tinud operation of the machine positively actuate's' mechanism designedto bring about dro ping of thevalve.

- are are many other mechanism, such as a conserving of the air 9 Thepreferred embodiment of .our mm.

features of advantage ar smg from our novel form of timing utilized anda proper lubrication of the'jparts of thetim'ing mechanism. These fea-''tures appear as this description prog-f I v tion is shown in theaccompanying drawings wherein similar characters of reference designatecorresponding parts and wherein:

Figure 1 is .a top plan .view of our. automatic timer.

Figure 2 isa partial vertical longitudinal section on line 2- -2 ofFigure l.

Figure 3 is an end elevation of the structure shown in Figure 2 showinga form of 'Figure -5.

b Figure 7 is a top plan view of the valve ase. 1

Figure 8 is 'a bottom planview of the valve a plurality of cam plates 8.

" plurality blocle Figure 9 is a vertical section taken approximately online 9--9 of Figs. 7 and 8' and also showing avertical longitudinalsection through the left head and a portion of the timer. i

Figure 10 is an enlarged sectiontaken approximately on line 9-9 ofFigure 7.

Figure ll is a section taken on line 1111 of Figure 10.

Figure 12 is a vertical sectional view diaammatically illustrating oneform of glass eeder units .comprising a combustion cup and shearstructure and also showin cylinder structure for operating the comustion cu I , hn the drawings, there is shown a timer box 1 supportedupon a suitable standard'2.

The timer box has its ends closed by circularheads 3 and 4, while nearthe center of, the

timer box there is provided a hollow transverse partition whichis.normally partially filled with oil for the lubrication of some of theparts contained within the timer box, this chamber being designated 5.

The heads '3 and 4 and the walls of the chamber hare fitted with bearinso as at 6, within which is journaled a shaft carrying These cam plates8 are fastened to the shaft 7 by means of set screws 9. The shaft 7 alsocarries a I of cam plates which are loose upon the shaft. a

The shaft 7 likewise carries a singlecam plate 11 fastenedthereto withset screws 9, this cam plate 11"being shown (Figure 2) 'near theright-hand end of the shaft The shaft 7 is driven from a source ofpo'werby any suitable gearing and is shown as being.

driven from a. variable speed motor 12, through a shaft 13, worm andworm wheel, respectively designated 14 and 15, the worm wheel beingmounted upon shaft 7.

,The cam plates 8 and 10 are in airs and carry gears 16 upon theiropposmg faces.

' pin 18 carried by ablock 19.

These gears 16 are in mesh with pinions 17. Each pinion 17 is mountedupon-a depending This block 19 is fitted upon the shaft ,7 and thisshaft 7 turns therein.

The ends of the pins 18 extend into the ends 'of a yoke member 20 sothat the pinions upon the two adjacent pairs of cam plates 8 and 10 maybe adjusted in unison.

The adjustment of this yoke member 20 to regulate the position of thepinions and the consequent relation of the cam plates is renderedpossible by the provision on the yoke of two depending spaced lugs 21which are drilled transversely for the reception of a 'swivel pin 22.This swivel pin 22 is likewise drilled transversely and is threaded forthe receptionof a hand-operated screw such as is shown at 23 in Figure4:. The pin 22 is so fitted that it will turn freely in the lug 21 andthe threaded rod is shoulderedas at 24 in. Figure 4. Beyond thisshoulder, this screw rod is reduced, as at 25 and passes through atransverse hole such as 26 in the pin 27(-Figure 4) The handle formanipulating the screw rod for these particular pairs of cam platesdesirably take'the form of a hand wheel 28 rigidly secured tothe screw,rod and separated from the flattened surface of such a pin as 27 bymeans of spring washers such as shown at 29 in Figure 4. Thisconstructionv permits of a ready regulation of the position of the yoke20 so as to alter the position of the pinions and to consequently alterthe relation of the rigid and loose cam plates-with relation to eachother. Thus by turning the hand wheel 28, the yoke, 20 and consequentlythe pins 18 will be given a concentric motion around the shaft 7Furthermore, the swiveled pin 27 permits free movement of the yokemember.

The camplates are of circular form and are provided at determinedintervals around their edges with apertures 8 (see Figures 9 and 11) forthe reception of pins 30 threaded plates. However, a slifficient numberof holes or apertures are. provided to permit of any necessaryadjustment and these holes are so located that the edges of the rollerswill prono I for the reception of,nuts 31 and provided.

ject beyond the periphery of the plate to cooperate withthe stems of popet valves which are thus actuated to contro the. main differential areavalves that in turn control the application of intermittent air to thecylinders whichgovern'the movable units of the feeding device. f 1

The differential area valves and their cooperative mechanism whichoperate the cylinders that move the flaming cup ofour feederhorizontally and .vertically are practically 5 identical, one valvestructure being used for controlling the intermittent introduction ofair under pressure to the horizontal cylinder and another being used forcontrolling the intermittent introduction of air under pressure to thevertical cylinder. The valves which operate the horizontal and verticalcylinders are "respectively mounted in casings 34 and35. The casing 34and the mechanism enclosed thereby is shown best in Fig:

5 ures 9, and 11. This is the structure which controls the introductionof air under pressure to the horizontal cylinder and, inasmuch as thisstructure is substantially the same as the structure which controlsthe-introduction of air to the vertical cylinder, it will only benecessary to describe the structure shown in Figures 9, 10 and 11"withthe understanding that the description will likewise apply to thestructure contained within the casing 35. An

understanding of this'structure will be facilitated by the showing ofthe valvebase, in Figure 7, and by the bottom plan view of-t'he valveblock in Figure 8.

Beferring'to Figure 12', 'a spout forming a impart of a glass feeder isdesignated 90 and is provided with a bushing and an aperture as 1sconventionally shown at 91 and 92. In

this figure a combustion cup 93. is shown.

positioned below the bushing 91 and is so mounted'as to be oscillatedback and forth from a position below the bushing and also to bereciprocated at any time during .such

oscillation. The combustion cup is given vertical movement by thevertical piston and cylinder construction 94, and is given horizontal oroscillation movement by the horizontal piston and cylinder construction95. In the form of cylinder shown in Figure 12 it will be noted that thepistons are differential area pistons. Constant pressure air is designedto be supplied to-one area of the piston in the'vertical cylinder 94 andintermittent air under pressure is introduced to the other area of thepiston by means 'of the fluid operated valve structure mountedin thecasing 35. -The' piston in' the horizontal cylinder 95;- is similar in.construction to the piston in cylinder 94 and the valve inthe casing 34controls the introduction of air under pressure-to this horizontalcylinder. It will be understood that any suitable shear structuresuch-as 96 may be positioned beneath the feeder o. ific'e and mayoperated by horizontal cylinder and iston structure similar to the"structure shown -inthe cylinders 94 v and 95'. It will also beunderstood that air may be automatically introduced'under pres suretothis shear cylinder in the same manner as introduced into the combustioncupcylinders and that the proper time for the introduction of such airmay be determined and controlled by the timer.

The casing 34 1s cons with two conical valves 37 and 38 and whichcarries a piston head construction 39 upon its base. I The valve 37 isdesigned to cooperate signed to cooperate with avalve seat 41. Inbetween these valve seats 40 and .41 there is provided'a passage 42which is connected at tructed to contain a difierential area piston 36which is provided with-a valve seat 40 and the valve 38 is de--' itsupper end to a pipe-43 that'leads to the cate the gears, rollers andpins of the timing mechanism. Oil becomes mixed with this exhaust airpreferably by interposing a lubricatin device (not shown) in theconstant air line not shown) which connects with the constant air inletpipe 52. Obvlously, with this construction, the-intermittent airadmitted to the: 'operating'cylinders and ex-' hausted therefrom throughpipe 43, will carry shch oil in suspension.

Supplemental to this differential area valve piston we have providedpoppet valves 46-and 47. These poppet valves, are pressed downwardlyagainst their seats by coil springs 48 and 49 hearing in socketsprovided therefor. These poppet valves are also provided with dependingstems 50 and 51 which extend downwardly through the topof the timer boxand. into juxtaposition to the cam plates 8 and 10 which are rotating inopposite direc tions '51 are so" the rollers 33 and 10.

Leading into is a constant livers air un or pressure to a chamber 53abovethe valve seat 40 and the valve 37. This chamber 53 is providedwith a bypass 54 leading downwardly to the poppet valve 47 In operationof this structure, the rotation of the plate ,10: brings its roller intocontact with the-stem 51 of the poppet valve and this raises'the poppetvalvefand permits a free carried upon the cam plates ,8

The lower ends of these stems 50 and located that-they will beelevatedby';

ile

the upper end of the casing 34 ressure air pipe. 52 which depassage ofthe 'air from'pipe 52 and chamber 53 through bypass-54 past poppet valve47 Y and through duct 55 into the spacebeneath.

" the piston 39 of-the difi'erential area piston.

Until the *rais ing'of this oppet valve, the.

'difierential area piston has theconstant pressure air acting u n the-up-' n held down by 1 r end ofthe valve 37 in'the 'c amber53;

owever, the admission' of air tothe s'paee 56 below the difierentialarea valve serves to immediately overcome the pressure in the chamber 53due to the fact that the area to which the air is applied upon thepiston 39- is greater than the area of the upper side-of the valve 37.The result is that the piston 39. immediately moves upwardly and unseatsthe valve 37 at the same time seating the valve 38. Then the air under.pressure from chamber 53 passes by the valve 37, into the passage 42 andthence by way of the pipe 43 to the large area of the piston in thehorizontal cylinder. In the continued operation of the timer,-the roller33 on cam plate-8 comes into contact with the stem 50 of poppet valve 46and raises this poppet valve from its seat. Immediately, the air withinthe chamber 56 is exhausted by way of passages 57 and 58, passing by thepoppet valve and into the timer box. When this occurs, the differentialareavalve immediately drops due to the pressure in chamber 53,- seatingvalve 37 and unseating valve 38. The result is that the pipe 43 and thepassage 42 are connected to the passage 44 and to the exhaust ports 45so that the air in front of the larger area of the piston in thehorizontal cylinder is forced backward through pipe 43, passage 42 pastvalve 38 into passage 44 and-through exhaust port 45 into the timer box.

An additional feature of this differential area valve consists in theprovision of means for maintaining the valve raised by what we havetermed an airlock. It takes the form of a port 59 and a passage whichleads from the passage 42 throughthe wall of the valve and into thespace of chamber, 56. The result is that when the valve is raised andair is permitted to pass from the chamber 53 into the'passa 42 andthence to the pipe 43 aportion of t 's air enters the port 59 and passesthrough the passa e 60 into the space of chamber 56. T e air't uspassing into the chamber 56 is cient to compensate for all leakage andto maintain suflicient pressure beneath the differential areavalve tolock it in raised position. However, the port 59 is of a lesser.diameter than the passage 57 so that when the poppet valve'46 is raised,the

air will exhaust with suflicient' rapidity, in

spite of the air being delivered to chamber 56 by the passage 60, sothat the diflerential area valve will dro without delay.

' At the extreme rl ght-hand'end of theashafi 7 7 there is provided acam plate and associated mechanism which has the combined function ofcontrollin the operation of the cylinder and 'piston' w "ch operate eshears and of controlling the operation 0 the trip-0E cylinder which iscommon to most forming machines. The cam platehas been designated 11 Iand' carries rollers 61 and 62 which are mounted thereon in the samemannei' as are fiiiiferential area construct-ion and the rollers 33 onthe cam plates 8 and 10.

' ,valve is forced downwardlyby 1,7eo,eaa

shown best in Figures 4, 5 and 6. The knifeoperating cylinder and themechanism associated therewith is of such a nature that acompletereciprocation of the knife-operating piston follows each introduction ofintermittent air to-the knife-operating cylinder for the reason that theknives are normally held open by constant pressure air, are closed whenan im ulse of air from the timer is'admitted to t e control valve whichtrips the control valve and it in turn admits the intermittent air tothe greater area of the piston, and are then again opened as soon as thecuttin action is completed by the automatic action of the structure ofthe shear-actuating mechanism as described in the aboveidentipressure isadmitted from the constant supply pipe 66through the stop cock'67 .whichbeen previously turned to permit of the passage of this air, past thevalve seat and through the assage 68 into the pipe 69which is showninigure 4 and which leads to the control valve of the shear. When thisoccurs,

the knives or shears move into cutting relation and then automaticallyreverse. v The mechanism for controlling the tripping oif ,or initiationof movement of the forming machine. is operated by the cam roller 62 nthe cam plate 11. This cam roller is esigned to contact with andforcedownwardly the stem 7 0 of a poppet valve 71 which is normallyheld'against its seat by means of a coil spring 72. When this po pet camroller 62 with the stem 0 the constant pressure air from the 'pipe 66passes through contact 0 the I the assage in the stop cock 73, throughthe.

flexi le hose 74, -through the elbow 75, through the passage 7 6 pastthe poppet valve andthen through the passage 77 and flexible V hose 78to a cylinder 7 1 and piston 71" construction which is common to presentda formingmachines and which trips of suc fo machine 'after' each chargeis dropped into a mold, I lihe form of tripping oif mechanism maybevaried, but in the form igure 3, the piston 71 ma beef aving applied toits shown in fluid pressure constantly t5 Also, holesare-provided aroundthecamplate smaller surface and intermittently applied tive any suitablemechanism such as electrical apparatus, levers, gears, clutch mechanism,a valve or valves et cetera, for unlocking or starting the shapingmachine in motion, all of which, obviously, depends upon theconstruction of the particular sha ing machine employed, as is wellrecognize by those skilled in the art; The reverse movement of thepiston 71 may be efiected by the rovision of a bleed port 71 in thecylinder ead 71, which permits the fluid on large face of the piston71". to exhaust u on the closing .of valve 71. It is to be un erstoodthat thebleed port 71 is not of such siaeas to interfere with themovement of the piston 71 when pressure is admitted to its large face.Upon'the exhaust of fluid from the and 77 l are mounted and providelarge face of the piston, the constant pres sure actin on its smallerface will moveit to the origma-l position (as shown) ready for the nextoperation in the succeeding cycle.

The poppet valve 71 and the passages 76 in an element? hichis swung fromthebearing 6 and which comprises two sections 79 and 80 (see Figures 5and 6). This element is angular in set'tion as shown in Figure 5eandimmediately adjacent to the poppet valve is pro- *vided with a bifurcateportion 81 carrying a swivel pin 82 which is apertured as at 83 andwhich has this aperture 83 threaded for the reception of the screw rod23 that has been already described. Rotation of this screw rod willserve to swing the dependin element 7 9 and its portion 80 about thearing 6. This will result in changing the position of the'poppet valveand its,stem 70 so that it will be actuated either sooner or later,dependiii upon the direction in which the screw ro is turned: Thus, byturning the handle 84 of this screw rod, the time of ac- 7 to maintainthis member 79 properly space I from the cam plate 11 as at 88.

tuat'ionof the poppet valve and consequently the time of tripping off ofthe forming ma chine may be adjusted and thisadjustment may be effectedwhile the glass feeder and the timin mechanism is in operation.

- 5 It will e noted that the'member 7 9 is. held firmly against theplate 4 by means of a screw pin 85 extending through a slot 86 in theplate 4 and pooperating with a leaf-spring- 87 that is placed between,the head of the pin 85 and the element 4. This structure is such as topermit of the re uisite movement of the member 7 8 about the caring-6for all necessary purposes of adjustment'and it also serves f It will beunderstood that in tionof this invention the term forming mathedescripchine has been used for the purpose of facilitating description.It is intended to in clude presses, press-and blow machines, bottlemachines, and, in fact, practically any type of machine capable ofreceiving a charge from a feeding device and forming this charge eitherwholly or in part.

The stop cocks 67 and73 are provided so.

that either the shears or the press or formmg machine may be cut out ofo eration independently. However, it will be understood that in thepractical operation of our device it is not'feasible to stop theoperation of the shears without first stopping the operation of ourflaming cup.

Having thus described our invention, what we claim is: v

. 1. In glass feeding apparatus, a diiferential area valve, a chamberfor maintaining constant fluid pressure in contact with the from thesaid last-mentioned chamber to per-' mit return of the valve to normalposition.

2. Timing mechanism for lass feeding apparatus comprising a fluiddlstributing valve mechanism, a differential valve for controlling theintroduction and exhaust of fluid to .the driving units of the glassfeeding apparatus, and a pair of cam plates 0 erating together toactuate said fluid distributing valve mechanism, the said cams beingadjustable with relation to each other to vary the time of introductionand exhaust of fluid with rela- .tion to each other.

3. Timing mechanism forglass, feeding apparatus comprising means forintermittently supplying fluid pressure to the trip-01f cylinder' of aforming machine said means embodyin a poppet valve an a cam late, andmeans or -ad uSting the position 0 the poppet valve so as to varyoperated by the cam plate. Y

4. Timing mechamsm for glass feeding the instant when is a, paratuscomprising means forintermittently supplying fluid pressure to theshearstruc- .ture of 'the feeding apparatus and to the tripofi' means ofa' formm machine, said means embodying poppetbva ves and a camplate, andmeans for adjusting the position of th'e' trip-ofl poppet valve grelative to; said cam plate.

paratuscomprising means for intermittently supplying fluid pressure tothe shear structure of the feeding apparatu's andto the trip- 5. Timingmechanism for glasg feeding ap-l off cylinder of a'forming machine, saidmeans embodying poppet valves, a cam plate and cam rollers thereon, saidrollers being relatively adjustable of each other, and means foradjusting the position of the trip-off valve 1ndependently of saidrollers 6. In combination with having,a plurality of movab e units withopv crating mechanism therefor, a source of fluid pressure, intermediatefluid actuated valves for automatically regulating the application offluid to the operating mechanism of said units, and a series of cams forcontrolling theapplication of fluid to said valves whereby theapplication of fluid to said operating mechanism is regulated.

7. In combination with glass machinery having a plurality of movableunits with operating mechanism therefor, a source of fluid pressure,intermediate fluid actuated valves for autuomatically regulating theapplication shiftin of fluid to the operating mechanism of said units,and a series of cams for controlling the application of fluid to saidvalves whereby the application of fluid to said operating mechanismis'automatically controlled.

. 8. In glass feeding apparatus, a differential area valve, a poppetvalve to admit fluid under pressure beneath said differential areavalve, a second poppet valve to exhaust fluid under pressure frombeneath said diftion of an operating unit of such machinery,

a revolving member adapted to actuate said valve, means for supportingthe rotary member and the valve, and means for shifting the valve in anarc concentric with the axis of rotation of the revolving member wherebythe time of actuation of said valve may be varied. 1

11. In a timer mechanism for glass working machinery, valves controllingthe operation of such machinery, a revolving member adapted to actuatesaid valves, means for support ng the rotary member and the valves,

and means, including an arcuate slot in said support ng means and clampng means associated therewith, for shifting one of said valves in an arcconcentric with the axis of rotatlon of the revolving member and foralignmg the contact portion of said valve with the actuating portion ofthe revolving member, whereby the relative time of actua-"" lassmachinery tion of the controlling valves may be varied.

12. In a timing device for the control of glass working machineryprovided with fluid pressure operating means, a rotary element, asupport therefor, a controlling valve mounted upon said support andadapted to; be moved in an arc concentric with the axis of rotation ofthe rotary element, an arcuate slot in said support, a clamping memberassociated with said valve and co-operating with the slot fordetermining the position of said valve, whereby said valve may be movedin the path of the rotary element to vary the time of actuation of saidvalve.

13. In a timing device for the control of glass working machineryprovided with fluid, pressure operating means, a rotary element, a-

support therefor, a controlling valve adapted to be actuated by saidrotary element and provided with flexible air connections to a source offluid pressure supply and to an operating unit of the machinery, andmeans, including-an arcuate slot in said support and a clamping meansassociated with the controlling valve and. co-operating with said slot,for moving said valve concentrically with the axis of rotation of therotary memher and ifrthe path thereof, whereby the time of actuation ofsaid valve may be varied.

14. In a timer for controlling the movements of the'operating units of afluid pressure operated glass working machinery, a

rotary actuating element, a support therefor,"

valves adapted to be actuated by said rotary element, so mounted onsaid'support as to permit changes in their relative angular positionsabout the axis of rotation of the rotary element, flexible airconnection to one of said valves and means'fo'r moving one of saidvalvesrelative to another,- whereby the relative time of actuation ofsaid valves may be varied.

1 5. In a timing device, the combination of a rotary shaft havingcontact members mounted thereon, a support for control elements providedwith a bearing hub for the shaft, an operative control element rigidlymounted on the support and in the path of movement of one contactmember, another operative control element movably mounted on the bearinghub, and means for adjusting the movable controlelement concentri'callwith the axis of the shaft and in the path of movement of the othercontact element to change the relative time of operation of;the controlelements. i l/ 16. In a rotary timing "device for pneumatically operatedmechanism, valves for controlling-the admission of fluid pressure to the.mechamsms, a rotary actuator member for periodically actuating thevalves, a stationary support for one of the valves, a bear mg on thestationary support for the rotary member, a movable support for anotherof said valves, said movable support being wed es 17. In cbmbmationwithpheumatically operated glassworking machinery having a lurality ofglassworking units, a source of ui-d pressure supply, a stationary valvefor controlling the admission of fluid pressure to one unit, a' movablevalve for controlling the admission of fluid pressureto another unit,flexible conduits for distributing fluid pressure to the glass makingunit through'said valve, a rotatable member carrying separate contactelements each adapted to eriodically' actuate one ofthe valves, abearing for supporting said moyable valve and said rotary member, meansfor swingin the movable valve in an .arc, concentric with the axis ofthe rotatable member to change its time of o eration and means foryieldably clamping t e support in the pathof one otv the rotatablecontact elements 18. In a timing device, for glassworking machine thecombination of valves for I transmitting fluid pressure to separateglassworking units, a rotatable member having con: tact members mountedthereon, said contact .members being arranged to revolve in differentplanes and each adapted to periodi; call actuate a valve, means forshifting one of t e valves man are concentric to the axis "of rotationof the rofiztable member-and in the path of movement of itscontact-member, whereby the relative time between the actuation of thevalves may be varied. I 19. ,In combination with pneumatically op- 40erated glassworking machinery having a plu 'rality of units, afsource offluid pressuresupply, valves for controlling the admission of fluidpressure to the glassworking units, a valve actuator associated witheach valve, 9. 45 rotary member havingcontact elements for periodicallyengaging the valve actuators,

means for changing the time of operation of one of the valves, by movingsaid valve along the path ofiits contact element.

20. In combination with pneumatically operated glassworking machineryhaving a pl urality' of units, a source of fluid pressure, valves forcontrollin the admission of fluid pressure to each of t e glassworkingunits; 1

prov1ded with a pair of moving 0 ntact mema valve actuator associatedwith each valve, a rotary member having contact elements forperiodically engaging the valve actuators, one of sa1d valve units-beingmounted a concentrically of the-axis of said rotary meme ber, means forshifting the last named valve circumferentially of the rotary memberto.

: change the period of actuation. of th'e'valve,.- and a flexible airconnection between the mov-v able valve and the source offluidpressura]; '65 21. In -a timing device-for glassworking machinery, thecombination of valves/for transmittmg'fluid pressure to separate glass-,working units, a rotatable member havlng contact members mounted thereonand arranged to revolve in difierent planes and each-L adapted toperiodically actuate a valve,

means for shifting one of the valves in anarc concentric to the axis ofrotation ofthe rotatable member and in the path of movement of itscontact member while the memher is rotating, whereby the relative timeof the actuation of the valves may be varied during the operation of theglass working machinery.

2.2. Timing mechanism for glass feeding 8o apparatus comprising meansfor intermit-. tently supplying fluid pressure to the trip-oflf cylinderof a forming machine, said means embodying a valve and a rotary member,and means for adjusting the position of the valve 35 so as to vary theinstant when it is operated by the said member. a

23. Timing mechanism for glassworking apparatus, comprising means forintermittentlysupplying fluid pressure to a plurality of operating unitsthereof, said means including a rotarymember and valve structure havinga common axis, and means for varying the angular position on said axisof said valve structure.

24. Timing mechanism for glass feeding apparatus comprising means forintermittently supplying. fluid pressure to the. shear -structure of thefeeding apparatus and to the trip-o'fl' means of a forming machine,saidmeans embodying valves and a rotary actuator, and'means for varying theposition of .the valve supplying pressure to the trip-oflf means.

25.- Timing mechanism for glassworking apparatus comprising means forvintermittently supplying fluid pressure to the shear structure of thefeedin apparatus and to the trip-ofi' cylinder of a orming machine, saidmeans comprising controlling valves,'a rotary cam plate and cam rollersthereon, said rollers being adjustable on the cam plate relative to eachother and means for adjusting the position on itscam path of the valvesupplying the tri -ofl cylinder, whereby the relative time o actuationof the valves may be varied independently of the adjustment of the camrollers. ;f.' .j;5I--' 26. The combination 'with a "timing device bers,means for adjusting the relation between said contact'members a' 'fixedcontrol element, a movable supportaindanother control-element-moun'tedthereon, each of said control. elements'being actuated by one of .saidcontacts,='whereb by shifting saidsupport the-.relative'timing 0f thetwo control elements-may be adjusted.

bers, a fixed control element, a movable support, a control elementmounted on said support,each of said control elements being in the pathof one of said contact members, and means for shifting said support tochange the position'of its control element on the path of its contactmember, whereby the timing of said control elements may be adjustedwhile the timing device'is in operation.

28. The combination with a timing device provided with moving contactmembers, a fixed support adjacent to the timing device, anoperative-control element mounted on said fix'ed support and in the pathof one of said contact members to be periodically actuated thereby, asecond support movablymounted L said contact members to be periodicallyactu- D er by the relative timing of said elements.

m y b djusted. l

ated thereby, a second support adjacent'to said timing device, a secondoperative-control element mounted on said second support and in the pathof another of said contact members to be periodically actuated thereby,and means for shifting said second support relative to the timing devicewhereby the relative timing of said elements maybe adjusted while thetiming device is in operation.

30. The, combination with a timing device provided with moving contactmembers, means for adjusting the relative movements of said contactmembers,a fixed support adjacent to said timing device, anoperativecontrolelement mounted on said'fixed sup-i port and in'the pathof one of said contact I members to be periodically actuated thereby,

a movable support adjacent to said timing deviceyand. a secondoperative-control element'mountedon said movable support andin the pathof another of said contact members to be periodically actuated thereby,

3l. -The cbmbination with a timing device provided With moving contactmembers,

7 means for adjusting the relative movements;

jof said contact members, afixed support adjacent to said-timing device,an operativecontrol element mounted on said-fixed support'and inthe pathof one of said contact members to be periodically actuated thereby, asecond support adjacent to said timing device, a secondoperative-control element" mounted on said second support and in thepath of another of saidcontact members to be periodically actuatedthereby, and means for shifting said second support relative tothetiming device whereby the relative timing of said elements may beadjusted while the timing device is in operation.

32. In a rotary timing device, the combination of revolving contactmembers, an opbination of revolving contact members, a

fixed support mounted adjacent to the device, an operative-controlelement mounted on said support and inthe path of one of said contactmembers to be periodically actuated thereby, a second support adjacentto said device and movable m an arc concentric with the axis of thettiming device,

and a second operative-control element mounted on said second support inthe path of another of the contact membersto be periodically actuatedthereby, whereby the relative timing of said elements may be adjusted.

3-1. In a rotary timing device, the combination of revolving contactmembers, a fixed support adjacent to the timing device, anoperative-control element mounted on said support and in the path of oneof the contact members to be periodically actuated thereby, a secondsupport adjacent to the timing device, a second operative-controlelement mounted on said second support and in the path of anothercontact member to be periodically actuated thereby, and means forshifting said second support in an are concentric with the axis of thetiming device whereby the relative timing of said elements may beadjusted.

35. In a rotary timing device, the combination of contact membersrevolving in unison about a. common axis, means for ad justingsaidcontact members about said axis,

an operative-control element fixedly mounted in.'the path'of one of saidcontact members to be periodically actuated thereby, and a secondoperative-control element mounted in the path of another contact memberand movablein an arc concentricwith the 'path of its associated contactmember whereby the relative timing of said elements may beadjusted.

36. In a rotary timing device, the combination of contact membersrevolving in unison about a common axis, means fer individuallyadjusting said contact members about an axis, anoperative-controlelement fixedly mounted in the path of one of said contact members to beperiodically actuated thereby, a second operative-controlelement mountedin the path of another of said contact members to be periodicallyactuated thereby, and means for shifting said second element in an arcconcentric with the axisof the timing device whereby therelative tim- Iing of the elements may be adjusted.

37. A timing mechanism for controlling the operation of pneumaticallyoperated glass feeding apparatus, comprism a fluid pressure operatedcontrol-valve For controlling the introduction and exhaust of fluidpressure to and from the feeder, means associated with the valve forregulating the application -of fluid pressure to said valve so as toproduce a desired periodic operationthereof, and a rotatable memberfor'controlling theoperation of the regulating means and adaptedautomatically to restore the periotrol valve.

dicity of the control valve should such periodicity be temporarilydisturbed bya manual actuation of said regulating means;

38. A timing mechanism for controlling the operation of pneumaticallyoperated glass feeding apparatus, comprising a fluid pressure operatedvalve, auxiliary vvalves associated with the control valve forregulating .the application of fluid pressure to said valve so as toproduce a desired periodic operation thereof, and a rotatable member forcontrolling the relativetimes of the movements ofthe auxiliary valves sothat manual operation of any of said auxiliary valveswill'onlytemporarily disturb the periodicity of the con-.

39. A timing,mechanism for controlling the operation of pneumaticallyoperated glass feeding apparatus, comprising a fluid pressure operatedcontrol valve,'auxiliary valves associated with the control valve forregulating the application of fluid pressure to said valve so as toproduce a desired periodic operation thereof, and a series of cams forcontrolling the relative times of the movements I of the auxiliaryvalves so that manual operation of any of said auxiliary valves onlytemporarily disturb the periodicity of the control valve. v

In testimony whereof we hereby'aifix our signatures. c

- OLIVER M. TUCKER.

WILLIAM A. REEVES.

